Constructed of steel for durability. For use with skidsteers. Sold per pair of chains. For use with tire sizes: 12x15, 12x16, 12x16.5, 265/85R16, 275/75R16, 285/70R16, 285/75R16, 295/75R16, 305/70R16, 315/70R15, 31x13.50x15, 325/60R15, 32x11.50x15, 33x10.50x15, 33x12.50x15, 33x12.50x16, 345/55R16, 35x7.50x16.5.